CFR›Title 49›Subtitle B›Chapter I›Part 199 ContainsSubparts A–CCorpusDaily eCFRDisplayed edition2026-04-27Last updated2026-04-27 PART 199—DRUG AND ALCOHOL TESTING Subparts A Subpart A—General Sections 199.1–199.9 B Subpart B—Drug Testing Sections 199.100–199.119 C Subpart C—Alcohol Misuse Prevention Program Sections 199.200–199.245 Authority49 U.S.C. 5103, 60102, 60104, 60108, 60117, and 60118; 49 CFR 1.53.Source53 FR 47096, Nov. 21, 1988, unless otherwise noted. Previous 198 Part 198—Regulations for Grants to Aid State Pipeline Safety Programs